Door-lock.



P. H. NEFPLEN & J. F. GIFFEN."

DOOR LOOK.

APPLICATION nun) FEB.4,1910.

Patented July 5, 1910.

' avwzmlfow Q 1M UNITED STATES PATENT OFFICE.

IPAUL H. NEFFLEN AND JAMES F. GIFFEN, OF ELKINS, WEST VIRGINIA.

DOOR-LOCK.

Specification of Letters Patent.

Application filed February 4, 1910. Serial No. 542,032.

To all whom it may concern:

Be it known that we, PAUL H. NEFFLEN' and JAMES F. GIFFEN, citizens of the United States, residing at Elkins, in the county of Randolph and State of West Virginia, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification.

This invention relates to looks and latches, and pertains especially to the class of cylinder locks, slidable tumbler.

The prime object of the invention is to provide a rack bar or looking bolt, slidable endwise through the look so that it may be lengthened or shortened as desired or as occasion may demand, and so that the said bar or bolt may be projected from either or both edges of the lock, and to provide means for sliding and locking the said bar or bolt.

A further object of the invention is to provide, in a cylinder door lock, novel and eculiar means for operating a locking bolt 'rom either or-both sides of the door.

A still further object of the invention is to provide a tumbler slidably held by and between a pair of plate springs, a rack and pinion-operated locking bar or bolt, and means controlled by one of such springs for lifting the tumbler to permit the operation of the said bolt.

A still further object of the invention is to provide special means for coupling and uncoupling the key-cyl-inders for operating the look from either or both sides of the lock or door to which it is applied.

Other objects, advantages and improved results will be found attainable in the practical application of the invention.

In the accompanying drawings forming part of this application: Figure l is a perspective view of a lock embodying the invention and showing the locking bolt or bar in locked position. Fig. 2 is a side elevation with one side of the lock casing removed, showing the slidable tumbler dropped. Fig. 3 is a similar view showing the slidable tumbler in lifted position. Fig. A is a sectional view on the line mw, Fig. 8. Fig. 5 is a perspective View looking at the stem end of the cylinder. Figs. 6, 7 and 8 are perspective views showing details of the invention. Fig. 9 is a perspective view of the slidable tumbler. looking at the periphery of the spur wheel. Figs. 11 and 12 are detail views of the spur wheel connections.

Fig. 10 is an elevation- The same reference numerals denote the same parts throughout the several views of the drawings.

Although the lock is specially intended for bolting large and heavy doors, such as store or ware-house doors, it may be varied in size and shape for various other uses. And although ordinary tumbler cylinders and key plates, such as the well known Yale type are shown, other cylinders and plates may be used, or we may devise special cylinders and plates, but for the purpose of illustrating and carrying out our invention, we have altered or modified said well known plates and cylinders as will be hereinafter described.

The lock casing 1, may be of any desired shape or size, and of any of the well known types, but the one shown is adapted for multiple keys, that is, a key for operating the look from both sides thereof, and having a key plate 2 on each side thereof, in one of which plates a cylinder 3 is revolved, and the other of which plates has a similar cylinder 4, and each of said cylinders contain a tumbler 5 operated by a key 6. A locking bolt or bar 7 is provided with an inlaid or countersunk pinion rack 8 for a greater portion of its length, and this bolt or bar and its rack may be varied in length according to the size of the lock, the bolt or bar being capable of projecting from either edge of the casing, so as to furnish a greater length of bar outside of the lock casing than is possible in any lock of this character known to applicants. Owing to this extension feature of the bolt or bar, it is made solid throughout and without the usual cutouts, cavities and reduction of any part thereof in thickness, and therefore it is of the same width and thickness throughout. The rack 8 meshes with a pinion 9'loosely mounted on the inner end of the cylinder 3, hereinafter more particularly referred to. The locking bar 7 has a stop lug or projection 10 on one side thereof central of its length, and travels through a slot 11 in a slidable tumbler 12 during the movement of the bar 7. From each end of the slot 11 extends a shoulder 13, which engages the lug 10 when the latter engages one side or the other of the lock .casing, whereby the bolt 7 is locked or held against longitudinal movement, in either locked or unlocked position of the door to which the lock is applied.

The pinion 9 may be operated bothfrom the inside orthe outside of a door to effect the locking and unlocking thereof, or the lock may be operated only from the inside or from the outside as desired. In either or any .event the pinion 9; is moved or revolved by turning one or the other of the key cylinders. When the lock is operated through the key cylinder 3, movement of thiscylinder is imparted to the Pinion 9 by the following described mechanism or its equivalent: the key is pushed inwardly against a follower 14, Working in slots of the cylinder 3 and controlled preferably by a spiral spring 16, attached to a disk 17,

'(or a-coil spring may be used) having a yoke 18, through which, and the disk, a pair of stems 19 project from the inner end of the cylinder 3, and are provided with nuts 20 for securing the disk and its yoke to this end of the said cylinder with the spring in position to be compressed by the follower and permit the latter to be pushed between pins 21 on one side ofthe pinion 9,.which is loosely mounted on this end of the cylinder so as to permit the cylinder to be turned therein until the projecting ends 'of the followerstrike a pair of the pins 21, whereupon the pinion is turned with the cylinder. Said cylinder has pins 21 opposite the pins-21.

The means for automatically sliding or lifting the tumbler 12, so that the pinion may slide the bar or bolt 7, comprises a collar 22 loosely mounted on the disk 17 and having apair of lugs 23 projecting from the periphery thereof between the pins 21*, and a pair of arms or cam pieces 24 projecting from the collar between and perpendicular to the lugs 23, and a stem socket 25 connected with the collarby said arms or pieces 24, a plate spring 26, having one end attached to the lock casing and the other 7 end riding upon one of the arms 24, while the other of said arms holds the tumbler in 10 between the" tumbler shoulder and the lock casing, in which position the bar is locked. .It is obvious that a reverse movement of the parts by the key will unlock the bolt. V

- The key cylinder 4 is used to operate the rack and pinion from the opposite side of the lock to that of the cylinder 3, and said cylinder 4 has short projections or stems 28 upon each side of a slot 29. Instead of the follower 14 a plate ring 30 has a bar 31, working in the slot 29 under a spring 32, which abuts against a disk 33 secured by the stems 28 on the inner end of the cylinder 4.-- The disk also holds a s ur wheel 34 revoluble .on said cylinder en The ring 30 is provided with. a pair of pins 35, and when the ring is pushed by the key, the pins 35 mesh with the s ur wheel so as to impart the movement of the cylinder to the spur wheel. ,The spur wheel has a hub or annular flange 36, in which the head 37 of a coupling stem 38 is loosely pivoted at 39. The stem 38 fits the socket 25 so as to turn the socket and its connections for operating the pinion.

It is obvious that various mechanical changes may be made in the several parts,

and that means equivalent to such as shown and vdescribed may be employed for assemblin and connecting the elements for transmitting the motion of the cylinders or either of them to the locking bar and its controlling tumbler.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is: '1. In a lock of theclass described, a locking bolt, a rack and pinion for operating the bolt, means for operating the pinion, a

tumbler for locking and unlocking the bolt, and means operated by the inion for sliding the tumbler across the olt simultaneously with the bolt reaching its limit movement. 9

2. In a lock of the class described, a locking bolt having a lug on one face thereof, a rack and inion for operating the bolt, a tumbler slid able across the bolt in engagement with the lug, means for operating the pinion from either side of the lock, and means operated by the pinion for sliding the tumbler.

3. In a lock of the class described, a locking bolt, a rack and pinion for operating the bolt, a tumbler slidable across the bolt, means for operatin the pinion from either side of thelock, adiey cylinder,means for coupling and uncoupling the pinion and cylinder, and means mounted on the cylinder and operated by the pinion for sliding the tumbler.

4. In a lock of the class described, a lock casing, a locking bolt having a rack therein so as to leave either end projectable from the look, a stop lug on the face ofthe bolt and adapted to engage the ends of the lock casing for limitin the movement of the bolt, a tumbler havin a slot through which the lug slides for ma ing suchyengagement and means for operating the pinion.

5. In a lock of the class described, a locking bolt having a rack therein so as to leave either end projectable from the look, a stop lug on the bolt and adapted to engage the look casing for limiting the movement of the bolt, a shouldered tumbler slidable across the bolt and having the said lug working through it and against the shoulders for locking the bolt means for operating the pinion, and means operated by the pinion for sliding the tumbler.

6. In a lock of the class described, a look- I ing bolt having a rack, a pinion for operat- 10 ing the bolt, a key cylinder on each side of the lock for operat-in the pinion from either side thereof, an means connecting the cylinders with the pinion.

In witness whereof we hereunto set our hands in the presence of two witnesses.

PAUL H. NEFFLEN. JAMES F. GIFFEN. Witnesses:

H. B. STRAIT, WM. E. VALK, Jr. 

